More than three decades earlier, he was considered for the role of Kang in the original series episode "Day of the Dove", however, that role went to Michael Ansara.(citation needed • edit) He also played the voice of Dr. Curt Connors and his alter ego, the Lizard, in the 1990s animated Spider-Man series. He is perhaps best known for hosting Science International / What Will They Think Of Next?.

He voiced the character of Matthew Thorne on an episode of Batman: The Animated Series, playing the close friend of Dr. Leslie Thompkins (a recurring character voiced by Diana Muldaur).